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Round|Natural|GIA

1.25ct K I1 Round Natural Diamond

EX • K/I1 • GIA 7491150898

Certificate GIA 7491150898

Diamond specifications and retailer prices

From £1,233 GBP
As of November 5, 2026
Save £2,213 GBP (64%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,446 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.25ct natural round diamond

This 1.25ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and I1 clarity (included), with a top-tier cut grade and certified by GIA 7491150898. Listed at 8 retailers as of November 5, 2026, with prices from £1,233 to £3,446, a £2,213 spread on the same certified stone. NZ Jewellers lists it at £3,446. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
K
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 7491150898
Dimensions6.86 × 6.90 × 4.28 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Girdle conditionFaceted
Key to symbols
Crystal, Feather, Cloud, Cavity, Needle, Indented Natural
Top View
6.86 mm6.90 mm1.25 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 7491150898
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £3,446 GBP|Low: £1,233 GBP|High: £3,446 GBP|Avg: £1,819 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 2£1,233 GBP
Retailer 7£1,489 GBP
Retailer 9£1,609 GBP
Retailer 5£1,649 GBP
Retailer 6£1,649 GBP
Retailer 4£1,724 GBP
Retailer 8£1,902 GBP
Retailer 3£2,045 GBP
NZ Jewellers£3,446 GBP

43 data points across 9 retailers

8 retailers£1,233 GBP to £3,446 GBP

A
Cheapest Retailer
-
£1,233 GBP
B+
Retailer 2
-
£1,489 GBP
View
Retailer 3
-
£1,649 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£1,649 GBP
View
B+
Retailer 5
-
£1,724 GBP
View
B+
Retailer 6
-
£1,902 GBP
View
B+
Retailer 7
-
£2,045 GBP
View
Most Expensive
C
NZ Jewellers
ff056d51-608c-48e5-a241-92e2bbee7476 · Nov 5
£3,446 GBP
$4,638 USD
View
7 more retailers have this diamond
Prices start from £1,233 GBPSave up to £2,213 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.25ct Round
£1,233 GBP